20161306 has 16 divisors (see below), whose sum is σ = 33615648. Its totient is φ = 8990800.

The previous prime is 20161291. The next prime is 20161321. The reversal of 20161306 is 60316102.

It is an interprime number because it is at equal distance from previous prime (20161291) and next prime (20161321).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7480 + ... + 9811.

It is an arithmetic number, because the mean of its divisors is an integer number (2100978).

Almost surely, 2^20161306 is an apocalyptic number.

20161306 is a deficient number, since it is larger than the sum of its proper divisors (13454342).

20161306 is a wasteful number, since it uses less digits than its factorization.

20161306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17357.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 20161306 is about 4490.1342964326. The cubic root of 20161306 is about 272.1695615908.

Adding to 20161306 its reverse (60316102), we get a palindrome (80477408).

The spelling of 20161306 in words is "twenty million, one hundred sixty-one thousand, three hundred six".